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Free API-571 Exam Braindumps (page: 11)

Page 10 of 114
PDF with 454 Questions

______ is similar to HIC but is a potentially more damaging form of cracking which appears as arrays of cracks stacked on top of each other. The result is a through thickness crack that is perpendicular to the surface and is driven by high levels of stress.

  1. MIC
  2. SOHIC
  3. Sulfuric SCC
  4. None of the above

Answer(s): B



Weld heat affected zone graphitization is most frequently found in the heataffected zone adjacent to welds in a narrow band, corresponding to the low temperature edge of the heat affected zone, In multi-pass welded butt joints, these zones overlap each other covering the entire cross section.

Because of its appearance, this type of graphitization is called________.

  1. Half-moon
  2. Eyebrow
  3. Radii
  4. None of the above

Answer(s): B



At a given pressure, the H²S concentration in the sour water _________ as temperature _________.

  1. Increases, increases
  2. Decreases, decreases
  3. Increases, decreases
  4. Decreases, increases

Answer(s): D



In order for PASCC to occur the material must be ______.

  1. PWHT
  2. Non-PWHT
  3. Sensitized
  4. Austenetic

Answer(s): C






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